Lap-winding machine



Feb. 2 1927.

2 F. D. LANGEVIN LAP WINDING MACHINE Filed April 8, 1925 2 Sheets-Shootl 12 I ea 70 a ly/N 1759 7 0,

57 q 24 W A TTOR/VEY Feb, 22, 19 27.

1 1,618,716 F. D. LANGEVIN L111 WINDING MACHINE Filed April 8, 1925. 2Sheets-Sheet 2 Patented Feb. 22, 1927. 7

w re srArss PATENT oFF cE.

FELIX D. LANGIEVIN, OFf-LOWELL, MASSACHUSETTS, ASSIGNOR TO SACO-LC W'ELLSHOPS, OF IBO STO'N IVIASSACHUSETTS A CORPORATION OF MASSACHUSETTS.

LAP-WINDING MACHINE.

Application filed April 8, 1925 Serial No. 21,482.

to the absorption of moisture by the lining on the brake band or shoe onwarm moist days. Such an increase in resistance often is sutiioientto'make .a very great and objectionable difference in the hardness ofthe laps. .It- .is, therefore, the chief object of the presentinvention. to devise means for preventing an. occurrence of thischaracter.

The invention also aims to accomplish this.

generalresultby a simple and inexpensive mechanism.

The nature of the invention will be readily understood from thefollowing description when read in connection with the accompanyingdrawings, and. the novel features will be particularly pointed out inthe appended claims.

Referring now to the drawings, Figure 1 is aside elevation of a part ofthe lap winding mechanism of an evener,

picker, or similar machine;

Fig. 2 is a cross sectional view on the line 2-2, Fig. 1;

Fig. 3 is a side view of a special gear shown in Fig. 2; and

Fig. 4 is a cross sectional view on the line H, Fig. 3, showing the gearand a disk which cooperates with it.

Referring first to Figs. 1' and 2, the lap winding rolls are indicatedat 2 and 3, these rolls being rotated in a suitable direction to windthe lap 4. The lap is wound on an arbor or spindle 5,. and during thisoperas tion two racks bear on the opposite ends of the arbor or spindle-One of these racks is shown at (3 in Figs 1 and 2, and a part of theother rack is shown at 7 in Fig. 2. Each rack is provided with a head atits upper end in which rolls 8 and 9 are mounted to bear on the end ofthe spindle 5. Both weight 25 backward or forward.

racks are guided vertically in the machine frame.

The toothed portions of these racks mesh i with pinions 10 andll,respectively, Fig. 2,

which are secured to a horizontal rack shaft 12, so that as the lap 1increases gradually in diameter the racks will be lifted and thusrotatethe shaft. 12. Keyed, or otherwise secured, rigidly on the shaft12 is a disk 14:, Fig. 2,'and mounted immediately beside this diskbutfree on the shaft 12 is a gear 15. .A wooden shearing pin 16 connectsthis a pinion 17 mounted to rotate freely on a counter shaft 18, thispinion being formed integral with, or secured to, a gear19 meshing witha gear 20 on the shaft 12. A brake is formed integral with it, and theperiphcry of this drum is engaged by a brake shoe v22 secured on a brakelever 23 which is pivdisk and the gear sothat the disk drives the gearthrough the pin 16. The gear 15 drives drum 21 is secured fast to thepinion 20 or oted onthe shaft 18. A treadle 24.- is formed at theforward end of this lever and a.

weight 25 is mounted for slidable adjust' ment on the rearward end ofthe lever. The shaft 12 is provided with a hand wheel26 by'means ofwhich it may be rotated manually.

It will now shaft 12 is rotated slowly by the gradual increase indiameter of the lap 4 as it builds up, this rotary motion will betransmitted through the gearing above described to the brake drum 21thus rotating this drum against the friction of the brake shoe 22.

be understood that as the The resistance so applied to the building upof the lap can be adjusted by moving the If now the friction applied bythe brake shoe should become excessive for any reason, as, for example,due to the absorption of atmospheric moisture by the shoe, the pin 16will shear off when this resistance reaches a predetermined value, andthus will render the connections between the lap and the brake druminoperative. The attendant upon observing that the operationof thelet-otl' mechanism had been interrupted would know at once that thebrake mechanism was set uptoo hard and would adjust the weight 25inwardly before replacing the pin 16 and starting upthemachine again. i

It will be observed that the power transmitted through the shearing pin16 to the disk 11%. will depend upon the diameter of pin and thematerial of which it is made.

Since the adjustment of the let-oil mechanism will be varied to suit thecharacter and requirements of the Work, it is evident thatit isdesirable to use shearing pins of dii"- 't'erent sizes or shearingresistances. Accordinglygl' have providedthe disk 14 and 1 gear [5 withthree holes, as. shown in Fig.

:3, these holes being indicated, respectively, at 28, E29 and 30. Theyare made slightly dil ferent in size so that they will take shearingpins of driilerentsizes. \Vhile I prefer to use shearing pins made ofwood, it is Within the scope of the invention to use other ma terialsfor this purpose.

It will now be evident that the mechanism provided by this inventionautomatically prevents an excessive increase in the resistance imposedbythe left-oh? n'iechanism on a the building of the lap so that it isimpossible to wind laps of a hardness greater than that for which theshearing pin connecting the gear 15 and disk His selected. The mechanismadds but a trifling increase to the. expense of manufacture of themachine, and ordinarily requires absolutely no care or attention on thepart (XE the \vorkinan or machine attendant.

Having thus described my invention, What I desire to claim new is:

1. In a lap winding machine, the coinbination o'fi lap winding means, afriction let-nit mechanism including a brake drum and a brake shoebearing against said drum, said mechanism also including connectionsarranged to be operated? by the gradual increase in diameter of the lapfor rotating said drum,

and automatic means for rendering said connections inoperative when thefriction on said drums becomes excessive, said means being selective topermit a variation in the resistance at which it will interrupt theoperation of said connections.

2. In a la windin machine the combination of lap \vinding rolls, a lapspindle, racks arranged to bear on opposite ends oi sald splndle topress the lap against said rolls, a rack sha'tnpinions secured on said Fnation of lap winding rolls, a lap spindle,

racks arrmiged to bear on opposite ends of said spindle to press the lapagainst said rolls, a rack shalt, pinions secured on said shaft andarranged to be rotated by said racks, a rotary brake drum, a brake shoebearing against said drum, and connections between saiddrum and saidshaft for transmitting the rotation of the shaft tothe drum, saidconnections including a gear, a disk niountedbeside said gear, and ashearing pin connecting said disk and gear and transmitting motion fromone of said parts to the other, said disk and gear having a plurality ofholes adapted to register with each other to receive shear-mg plus ofdifferent sizes.

FELIX D, LANGEVIN.

